Effects of reduced voltage on the operation and efficiency of electric loads. Volume 2: Appendixes

The efficiency of important power system loads as a function of voltage was studied. A quantification of the energy consumption of electric load components as function of supply voltage and a means for predicting energy changes as a function of voltage at the circuit level are discussed. A variety of loads were tested at seven input voltages. At each voltage level, equipment was required to provide identical outputs where appropriate. Detailed test specifications were prepared for each load component including the appropriate dependent and independent parameters to be monitored during the tests. Air conditioning equipment, heating equipment, and distributions transformers were tested by outside subcontractors because these items required highly specialized and elaborate test facilities. Test specifications and procedures are included. Utilizing the results gathered thus far, a methodology was proposed to estimate distribution system efficiency as it relates to the operating voltage level.